Results on elastic cross sections in proton–proton collisions at s=510 GeV with the STAR detector at RHIC

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dc.citation.articleNumber138601
dc.citation.journalTitlePhysics Letters B
dc.citation.volumeNumber852
dc.contributor.authorThe STAR Collaboration
dc.date.accessioned2024-07-25T20:55:14Z
dc.date.available2024-07-25T20:55:14Z
dc.date.issued2024
dc.description.abstractWe report results on an elastic cross section measurement in proton–proton collisions at a center-of-mass energy s=510 GeV, obtained with the Roman Pot setup of the STAR experiment at the Relativistic Heavy Ion Collider (RHIC). The elastic differential cross section is measured in the four-momentum transfer squared range 0.23≤−t≤0.67 GeV2. This is the only measurement of the proton-proton elastic cross section in this t range for collision energies above the Intersecting Storage Rings (ISR) and below the Large Hadron Collider (LHC) colliders. We find that a constant slope B does not fit the data in the aforementioned t range, and we obtain a much better fit using a second-order polynomial for B(t). This is the first measurement below the LHC energies for which the non-constant behavior B(t) is observed. The t dependence of B is also determined using six subintervals of t in the STAR measured t range, and is in good agreement with the phenomenological models. The measured elastic differential cross section dσ/dt agrees well with the results obtained at s=540 GeV for proton–antiproton collisions by the UA4 experiment. We also determine that the integrated elastic cross section within the STAR t-range is σelfid=462.1±0.9(stat.)±1.1(syst.)±11.6(scale) μb.
dc.identifier.citationAbdulhamid, M. I., Aboona, B. E., Adam, J., Adamczyk, L., Adams, J. R., Aggarwal, I., Aggarwal, M. M., Ahammed, Z., Aschenauer, E. C., Aslam, S., Atchison, J., Bairathi, V., Ball Cap, J. G., Barish, K., Bellwied, R., Bhagat, P., Bhasin, A., Bhatta, S., Bhosale, S. R., … Zyzak, M. (2024). Results on elastic cross sections in proton–proton collisions at s=510 GeV with the STAR detector at RHIC. Physics Letters B, 852, 138601. https://doi.org/10.1016/j.physletb.2024.138601
dc.identifier.digital1-s20-S037026932400159X-main
dc.identifier.doihttps://doi.org/10.1016/j.physletb.2024.138601
dc.identifier.urihttps://hdl.handle.net/1911/117482
dc.language.isoeng
dc.publisherElsevier
dc.rightsExcept where otherwise noted, this work is licensed under a Creative Commons Attribution (CC BY) license.  Permission to reuse, publish, or reproduce the work beyond the terms of the license or beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.titleResults on elastic cross sections in proton–proton collisions at s=510 GeV with the STAR detector at RHIC
dc.typeJournal article
dc.type.dcmiText
dc.type.publicationpublisher version
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